CENTCOM seized the vessel 'Tuscat' after warnings, firing on its engine room. The IRGC is preparing a response.

The Strait is clearly not open and dangerous. Both sides' stances are hardening: the US is seizing vessels testing the blockade, Iran is threatening ships that comply with US instructions.

Ceasefire expires Wednesday. US negotiators are heading to Islamabad, but gaps remain wide on uranium enrichment and the nuclear file.

The seizure of the ship and the Hezbollah-Israel ceasefire (looking tenuous) are front-of-mind issues for the talks.

There are two simultaneous blockades (US and Iranian), making transit unsafe. Hundreds of vessels are stuck in the Persian Gulf.

Multiple incidents occurred over the weekend, including Indian vessels reporting gunfire. This represents a major clogging of key global energy arteries.